/* Centre Pivot Calculator Enhanced v1.0.2 - Styles */

.centre-pivot-calculator {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    max-width: 1200px;
    margin: 0 auto;
    background: #fff;
}

.centre-pivot-calculator .cp-header {
    background: linear-gradient(135deg, #2c5530, #4a7c59);
    color: white;
    padding: 30px;
    border-radius: 10px;
    margin-bottom: 30px;
    text-align: center;
}

.centre-pivot-calculator .cp-header h2 {
    font-size: 2.2em;
    margin: 0 0 10px 0;
    color: white;
}

.centre-pivot-calculator .cp-calculator-section {
    background: white;
    border-radius: 10px;
    padding: 0;
    margin-bottom: 25px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    border: 1px solid #e0e0e0;
}

.centre-pivot-calculator .cp-tabs {
    display: flex;
    background: #f8f9fa;
    border-bottom: 1px solid #ddd;
    overflow-x: auto;
    flex-wrap: wrap;
}

.centre-pivot-calculator .cp-tab {
    flex: 1;
    min-width: 120px;
    padding: 15px 12px;
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 14px;
    font-weight: bold;
    color: #666;
    transition: all 0.3s ease;
    border-bottom: 3px solid transparent;
}

.centre-pivot-calculator .cp-tab:hover {
    background: #e9ecef;
    color: #2c5530;
}

.centre-pivot-calculator .cp-tab.active {
    background: white;
    color: #4a7c59;
    border-bottom-color: #4a7c59;
}

.centre-pivot-calculator .cp-tab-content {
    display: none;
    padding: 25px;
    background: white;
}

.centre-pivot-calculator .cp-tab-content.active {
    display: block;
}

.centre-pivot-calculator .cp-section-title {
    color: #2c5530;
    font-size: 1.4em;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e0e0e0;
}

.centre-pivot-calculator .cp-input-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.centre-pivot-calculator .cp-input-field {
    display: flex;
    flex-direction: column;
}

.centre-pivot-calculator .cp-input-field label {
    font-weight: 600;
    margin-bottom: 8px;
    color: #444;
}

.centre-pivot-calculator .cp-input-field input, 
.centre-pivot-calculator .cp-input-field select {
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 6px;
    font-size: 16px;
    transition: border-color 0.3s;
    width: 100%;
    box-sizing: border-box;
    background: white;
}

.centre-pivot-calculator .cp-input-field input:focus, 
.centre-pivot-calculator .cp-input-field select:focus {
    outline: none;
    border-color: #4a7c59;
    box-shadow: 0 0 0 2px rgba(74, 124, 89, 0.2);
}

.centre-pivot-calculator .cp-help-text {
    font-size: 0.9em;
    color: #666;
    margin-top: 5px;
    font-style: italic;
}

.centre-pivot-calculator .cp-calculate-btn, 
.centre-pivot-calculator .cp-action-btn {
    background: linear-gradient(135deg, #4a7c59, #2c5530);
    color: white;
    border: none;
    padding: 12px 24px;
    font-size: 14px;
    border-radius: 6px;
    cursor: pointer;
    transition: transform 0.2s;
    margin: 5px;
    font-weight: 600;
}

.centre-pivot-calculator .cp-calculate-btn:hover, 
.centre-pivot-calculator .cp-action-btn:hover {
    transform: translateY(-2px);
}

.centre-pivot-calculator .cp-tab-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: 25px;
    padding-top: 20px;
    border-top: 1px solid #eee;
}

.centre-pivot-calculator .cp-nav-btn {
    padding: 12px 20px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
}

.centre-pivot-calculator .cp-prev-btn {
    background: #6c757d;
    color: white;
}

.centre-pivot-calculator .cp-next-btn {
    background: #28a745;
    color: white;
}

.centre-pivot-calculator .cp-results {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 20px;
    margin-top: 20px;
    border: 1px solid #e0e0e0;
}

.centre-pivot-calculator .cp-result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid #e0e0e0;
}

.centre-pivot-calculator .cp-result-label {
    font-weight: 600;
    color: #444;
}

.centre-pivot-calculator .cp-result-value {
    font-size: 1.1em;
    font-weight: bold;
    color: #2c5530;
}

.centre-pivot-calculator .cp-interpretation {
    background: #e8f5e8;
    border-left: 4px solid #4a7c59;
    padding: 15px;
    margin-top: 15px;
    border-radius: 0 6px 6px 0;
}

.centre-pivot-calculator .cp-excellent { color: #28a745; }
.centre-pivot-calculator .cp-very-good { color: #6f42c1; }
.centre-pivot-calculator .cp-good { color: #007bff; }
.centre-pivot-calculator .cp-fair { color: #fd7e14; }
.centre-pivot-calculator .cp-poor { color: #dc3545; }
.centre-pivot-calculator .cp-unacceptable { color: #6c757d; }

.centre-pivot-calculator .cp-collector-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 15px;
}

.centre-pivot-calculator .cp-collector-item {
    background: #f8f9fa;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    padding: 15px;
}

.centre-pivot-calculator .cp-collector-item h5 {
    margin: 0 0 10px 0;
    color: #2c5530;
    font-size: 0.9em;
    font-weight: 600;
}

.centre-pivot-calculator .cp-collector-item label {
    font-weight: 600;
    margin-bottom: 4px;
    color: #444;
    font-size: 0.85em;
    display: block;
}

.centre-pivot-calculator .cp-collector-item input {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    margin-bottom: 8px;
    font-size: 14px;
    box-sizing: border-box;
}

.centre-pivot-calculator .cp-action-buttons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
    margin: 20px 0;
}

.centre-pivot-calculator .cp-file-upload {
    margin-bottom: 20px;
    padding: 20px;
    border: 2px dashed #ddd;
    border-radius: 8px;
    text-align: center;
}

.centre-pivot-calculator .cp-file-upload input[type="file"] {
    margin: 10px 0;
}

.centre-pivot-calculator .cp-custom-collectors {
    display: none;
}

.centre-pivot-calculator .cp-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin: 20px 0;
}

.centre-pivot-calculator .cp-stats-item {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    border: 1px solid #e0e0e0;
    text-align: center;
}

.centre-pivot-calculator .cp-stats-value {
    font-size: 1.5em;
    font-weight: bold;
    color: #2c5530;
}

.centre-pivot-calculator .cp-stats-label {
    font-size: 0.9em;
    color: #666;
    margin-top: 5px;
}

.centre-pivot-calculator .cp-chart-container {
    background: white;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 15px;
    margin: 20px 0;
}

.centre-pivot-calculator .cp-chart-dual {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin: 20px 0;
}

.centre-pivot-calculator .cp-chart-single {
    background: white;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 15px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .centre-pivot-calculator .cp-input-group {
        grid-template-columns: 1fr;
    }
    
    .centre-pivot-calculator .cp-tabs {
        flex-direction: column;
    }
    
    .centre-pivot-calculator .cp-collector-grid {
        grid-template-columns: 1fr;
    }
    
    .centre-pivot-calculator .cp-stats-grid {
        grid-template-columns: 1fr;
    }
    
    .centre-pivot-calculator .cp-chart-dual {
        grid-template-columns: 1fr;
    }
}